1Y11

Mycobacterial adenylyl cyclase Rv1264, holoenzyme, active state

• PDB DOI: https://doi.org/10.2210/pdb1Y11/pdb

• Classification: LYASE
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2004-11-16 Released: 2005-05-24 
• Deposition Author(s): Tews, I., Findeisen, F., Sinning, I., Schultz, A., Schultz, J.E., Linder, J.U.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.299 
• R-Value Work: 0.235 
• R-Value Observed: 0.238 

Starting Model: experimental

Literature

The structure of a pH-sensing mycobacterial adenylyl cyclase holoenzyme

Tews, I., Findeisen, F., Sinning, I., Schultz, A., Schultz, J.E., Linder, J.U.

(2005) Science 308: 1020-1023

• PubMed: 15890882 
• DOI: https://doi.org/10.1126/science.1107642
• Primary Citation of Related Structures:  
  1Y10, 1Y11


• PubMed Abstract: 
  

  Class III adenylyl cyclases contain catalytic and regulatory domains, yet structural insight into their interactions is missing. We show that the mycobacterial adenylyl cyclase Rv1264 is rendered a pH sensor by its N-terminal domain. In the structure of the inhibited state, catalytic and regulatory domains share a large interface involving catalytic residues. In the structure of the active state, the two catalytic domains rotate by 55 degrees to form two catalytic sites at their interface. Two alpha helices serve as molecular switches. Mutagenesis is consistent with a regulatory role of the structural transition, and we suggest that the transition is regulated by pH.

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Organizational Affiliation: 

Biochemiezentrum der Universität Heidelberg, Im Neuenheimer Feld 328, 69120 Heidelberg, Germany. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 43.92 kDa 
• Atom Count: 2,764 
• Modelled Residue Count: 364 
• Deposited Residue Count: 407 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Hypothetical protein Rv1264/MT1302	A	407	Mycobacterium tuberculosis	Mutation(s): 0  Gene Names: Rv1264 EC: 4.6.1.1
UniProt
Find proteins for P9WMU9 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WMU9  Go to UniProtKB:  P9WMU9

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
1PE	C [auth A]	PENTAETHYLENE GLYCOL C10 H22 O6 JLFNLZLINWHATN-UHFFFAOYSA-N
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Free: 0.299 
• R-Value Work: 0.235 
• R-Value Observed: 0.238 
• Space Group: P 6₂ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 114.114	α = 90
b = 114.114	β = 90
c = 151.771	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-05-24 
Deposition Author(s): Tews, I., Findeisen, F., Sinning, I., Schultz, A., Schultz, J.E., Linder, J.U.

Revision History  

• Version 1.0: 2005-05-24
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Derived calculations, Version format compliance
• Version 1.3: 2024-03-13
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2024-04-03
  Changes: Refinement description